摘要
为了克服直流式气液旋流分离器数值计算过程中收敛速度较慢、健壮性较差的问题,急需引入高效稳定的数值求解算法。首先建立了直流式气液旋流分离器的物理数学模型,然后分别采用SIMPLE、SIMPLEC和IDEAL 3种压力速度耦合算法对旋流器进行数值求解,比较了3种算法的计算效率和健壮性。数值计算结果表明:在不同网格数量、入口速度和湍流模型下,IDEAL算法的收敛性和健壮性均优于传统的SIMPLE和SIMPLEC算法,因此建议在旋流器数值计算中采用高效稳定的IDEAL算法。研究结果为后续旋流器内气液两相复杂流动特性的研究及分离性能的预测奠定了基础。
It is in urgent necessity to introduce a high-efficient and robust numerical solution algorithm to deal with the slow convergence and poor robustness in the numerical calculation of axial flow cyclone. In this paper, a physical-mathematical model was established for axial flow cyclones. Then, three pressure-velocity coupling algorithms（i.e., SIMPLE, SIMPLEC and IDEAL） were adopted to perform numerical solution on cyclones. Finally, they were compared from the aspects of calculation efficiency and robustness. It is shown that the convergence and robustness of the IDEAL algorithm are superior to those of SIMPLE and SIMPLEC algorithms under different grid quantity, inlet velocity and turbulence model. Therefore,it is recommended to apply the high-efficient and robust IDEAL algorithm to the numerical calculation of cyclones. The research results provide the basis for the further study on the complex flowing characteristics of gas-liquid two-phase flow inside the cyclones and the prediction of separation performance.
出处
《油气储运》
CAS
北大核心
2017年第6期728-733,共6页
Oil & Gas Storage and Transportation
基金
国家杰出青年科学基金资助项目"传热传质学"
51325603
教育部新世纪优秀人才支持计划资助项目"微重力环境下相分离冷凝管内流型与传热协同机理研究"
NCET-13-0792
